There is no conclusive scientific proof!
The current theory is that they do exist and there is some
evidence to show that.......but again not conclusive.
Albert Einstein taught that energy couldn’t be created or destroyed.
It can only be changed from one form of energy into another form of energy.
This means that no matter what is done energy cannot be destroyed.
So that being the case would explain the possible existence of ghosts.
Energy as a rule cannot be destroyed so it must still be around.
If you experience a ghost you won't even need scientific proof
you’d have it first hand.

There is no scientific proof that ghosts do not exist because you can't prove something exists when it does not.
A more fair and balanced answer is no because if ghosts did exist, then it would be scientifically impossible to prove their existence because they are not 3-d objects and science can only prove something actually exists by being able to prove its existence by the natural laws of physics and biological laws.
Ghosts do not meet any of these criteria because you can't prove something does NOT exist; rather, you have to take evidence that supports and proves that some DOES exist.
I hope this helps to answer your question!

They certainly are real. I have pictures to prove it. This has nothing to do with science, but the paranormal, and it does exist all over. So many people are blocked and dont believe what they themselves cannot see. Our loved ones who have passed on watch over us, whether they do it in dreams, orbs and other ways. If you dont believe then you are losing out.

There appears not to be. I just went looking.
Wikipedia has several explanations for what could be considered ghost sightings:
Critics of "eyewitness ghost sightings" suggest that limitations of human perception and ordinary physical explanations can account for such sightings; for example, air pressure changes in a home causing doors to slam, or lights from a passing car reflected through a window at night. Reports of ghosts "seen out of the corner of the eye" may be accounted for by the sensitivity of human peripheral vision, which can easily mislead, especially late at night, when the brain is tired and more likely to misinterpret sights and sounds. Similarly, pareidolia, an innate tendency to recognize human forms in random patterns, often causes people to believe they have seen ghosts. In addition, some feel human psychology plays a part in such sightings; a person's belief that a location is haunted may cause them to interpret mundane events as confirmation of haunting. [11]
External influences, such as sound waves are thought to be another cause of ghost sightings. Frequencies lower than 20 hertz are called infrasound and are normally inaudible, but British scientists Richard Lord and Richard Wiseman have concluded that infrasound can cause humans to feel a "presence" in the room, or unexplained feelings of anxiety or dread.[12] And Carbon monoxide poisoning, which can cause powerful auditory and visual hallucinations,[13]depression, and a generalized sensation of illness and dread, was recognized as a possible cause for "haunted houses" as early as 1921.
Some skeptics dispute popular explanations for the existence of ghosts, such as the perception that ghosts are produced from the victims of unsolved violent murders. They suggest that if the former is true, then the number of such murders (approximately 1 million over the course of the twentieth century in America alone) should produce overwhelming numbers of ghost sightings. They also argue that the traditional perception of ghosts wearing clothing is illogical given the supposed spiritual nature of ghosts, suggesting that the basis of what a ghost is said to look like and consist of is quite dependent on preconceptions made by society. Skeptics also say there is a total lack of scientifically testable and verifiable evidence in favor of the existence of ghosts, despite centuries of interest in the subject.[14]
This site:
http://www.zerotime.com/ghosts/science.htm
claims some limited scientific support for the concept.
http://www.livescience.com/othernews/061027_ghost_hunters.html
this site examines some of the "methods" used by ghost hunters and assesses their credibility.

There has been a lot of evidence that ghosts exist but none of it has been deemed conclusive by the scientific comunity because it is either hard to reproduce or the exact reason for it's happening in the first place can not be assertained. there are some good articles too look at though. try here http://en.wikipedia.org/wiki/Parapsychology

no, not neseccarily. although energy can't be created or destroyed(which was taught by albert einstein)so technically speaking, since energy can't be destroyed it has to go somewhere. and that somewhere could indeed be apparations of the person before they passed away. although,so-called "ghost sightings" could be caused by the brain being tired and thinking it sees something it didnt. so there is no real answer to this question

No, there is not.
Scientific proof means the same outcome can be reproduced using the same means as another person, and ghostly activity cannot be reproduced. What evidence people do gather can be explained away or not at all. Digital cameras are useless because they have many issues with artifacts. EVPs are useless because we don't know whether recorders are picking up cell phones, radios, or our ears are just making up phrases.

This is a tough question because ghosts won't come into the lab for studies and replication is just about impossible. None of this stuff can be duplicated on demand.
It comes down to what you will accept as proof. Thousands upon thousands of ghost sightings? Is that enough? Absolutely reliable witnesses? Is that enough? Or have all these people somehow deluded themselves? Ghosts are an observable phenomena, but they are not observable on demand.
Skeptics obviously do not accept personal accounts, no matter how many of them, as proof. Personally, I think that if you have enough personal accounts, they are their own proof due to the statistical significance of large numbers. Such is certainly the case with ghosts.
You might be interested to know that ghosts do not violate any physics principles that we know of. They are certainly explainable with quantum physics in general, the observer effect and entanglement in particular. (Our universe has been shown to be observer created. That leaves a lot of room for strange stuff.)

It's strange how people can try to argue both sides for topics such as this. Skeptics are more likely afraid spirits exist, for it usually infringes on their elitist attitude of "I'm the master of my own destiny and control everything" and pro-activists generally have wishful thinking of an after life and seeing their loved ones again. None of you have proof to disprove or prove the above. To say they don't exist is truly ignorant though. We were created of a big bang ‘a miracle of epic proportion’ of the likes this universe has ever seen. ANYTHING could have come from this event. Ghosts/Spirits could easily be energy imprints of our original self created be the billions of bio-electrical impulses of our nervous system. The imprint is than released after death and this energy moves else where. Einstein stated energy is not created nor destroyed, but merely transfers to a different state. This is a common law of thermal dynamics. So this could be a very possible explanation of the phenomenon. Also, there are over millions on witness accounts of this phenomenon in just the past year let alone the thousands of years of history and tales surrounding this topic. To say that they are all lying or schizophrenic is almost idiotic and particularly arrogant, especially if the person that made this bold statement has made no research into the matter. Science is a powerful tool, of which, I employ on a day to day basis. I have found that the more you dig the more questions arise. From both personal experience (which I still can’t believe and have a hard time choking it down) and exploring the matter, I would say there is a really good possibility in the existence of ghosts/spirits and to say that they don’t exist because you have not seen one is no different than when people used to believe that the planet was flat because they hadn’t been around the world yet. Go and explore the matter for yourself Celestasia, that would best way to get an answer. Pop around the country and explore places considered to haunted and hopefully you will find your answer. If not, at least you would get some good sight seeing in, which is a lot better than reading a bunch of arguments about this.ïŠ

Hi
Ghosts are real. But, it can't be proved scientifically. Only can be felt. Experienced people knows it. But, please read a theory called "string theory", based on which, we can say why they are invisible? I will tell you what i read on internet. We are living in a three dimensional space. Assume that there is a creature in flat TV. It lives in two dimensional space. So, we are invisible to it as we live in a space where we have one more dimension. As per string theory, universe actually has 10 dimensions. So, not only ghosts. But, both God and evil are in the dimensions which are greater than ours in number. So, they are invisible to us even if they are only one meter away and can't be seen unless they reveal themselves to us. But, can be felt at any time through some signs. If people say that these signs are causes of nature and don't listen to ghost believers, then they can't experience the ghosts for ever. Doctors usually won't believe a person saying he saw the ghost. They won't investigate him, instead simply don't allow him to speak further and starts saying these are just one's imagination. This attitude people can't experience ghost for ever. Please listen patiently to those who had experienced it already. Think again and again and then come to a conclusion. When some one's father or mother is hurt, automatically tears flows in Son's eyes. This is a result of love. We can't see love physically but only can be felt. Will you say that i will believe only when the figure of love appears physically in front of me? No. It is impossible. But, love exists. Just think a while and understand that ghosts exists.

well basically
the law of energy conservation states that energy can't be destroyed or lost, but transferred
all we are is energy.
and there are tools that can sense paranormal activity
plus, i've had a few experiences

Simply put, dead people cannot come back to life in any form. When a person dies, he ceases to exist. Death is the opposite of life. The dead do not see or hear or think. Not even one part of us survives the death of the body. We do not possess an immortal soul or spirit.
After Solomon observed that the living know that they will die, he wrote:

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